Q67 / 90 · JEE Main 2022 (27 Jun Shift 2) · Physics

For a perfect gas, two pressures $P_{1}$ and $P_{2}$ are shown in figure. The graph shows

Correct answer
A
$P_{1} > P_{2}$
B
$P_{1} < P_{2}$
C
$P_{1} = P_{2}$
D
Insufficient data to draw any conclusion

Solution

We know that the ideal gas equation of gas is

$P V = n R T$

Keeping the temperature constant, we have, $V \propto \frac{1}{P}$

As seen from graph, $V_{2} > V_{1}$ , so $P_{1} > P_{2}$ .

Hence, the correct answer is option: 'A'.

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